Document
DATA SHEET
2N3970 2N3971 2N3972 N-CHANNEL JFET
JEDEC TO-18 CASE
DESCRIPTION
The CENTRAL SEMICONDUCTOR 2N3970 series types are N-Channel Junction Field Effect Transistors, designed for amplifier, chopping, and analog switching applications.
MAXIMUM RATINGS (TA=25oC)
SYMBOL
Drain-Gate Voltage
Source-Gate Voltage
Gate Current
Power Dissipation (TC=25oC) Operating and Storage
Junction Temperature
VDG VSG IG PD
TJ,Tstg
ELECTRICAL CHARACTERISTICS (TA=25oC unless otherwise noted)
40 40 50 1.8
-65 to +200
SYMBOL
TEST CONDITIONS
2N3970
2N3971
2N3972
MIN MAX MIN MAX MIN MAX
IDSS IDGO
IDGO ID(off)
ID(off) BVGSS VGS(off) VDS(on) VDS(on) VDS(on) rDS(on) rds(on) Ciss Crss
VDS=20V, VGS=0V VDG=20V, IS=0 VDG=20V, IS=0, TA=150oC VDS=20V, VGS=12V VDS=20V, VGS=12V, TA=150oC IG=1.0µA, VDS=0V VDS=20V, ID=1.0nA ID=20mA, VGS=0V ID=10mA, VGS=0V ID=5.0mA, VGS=0V
ID=1.0mA, VGS=0
ID=0, VGS=0, f=1.0kHz VDS=20V, VGS=0, f=1.0MHz VDS=0, VGS=12V, f=1.0MHz
50 150 25 75 5.0 30 250 250 250
500 500 500 250 250 250
500 500 500
40 40 40
4.0 10
2.0 5.0 0.5 3.0
1.0 -
-
- 1.5 -
- - 2.0
30 60 100
30 60 100
25 25 25
6.0 6.0 6.0
UNITS
V V mA W
oC
UNITS
mA pA nA pA nA V V V V V Ω Ω pF pF
(SEE REVERSE SIDE)
R0
2N3970 SERIES
N-CHANNEL JFET
SYMBOL td(on) td(on) td(on) tr tr tr toff toff toff
SWITCHING TEST CONDITIONS
ID(on)=20mA, RL=450Ω, VGS(off) =10V VDD=10V, VGS(on)=0 ID(on)=10mA, RL=850Ω, VGS(off) =5.0V VDD=10V, VGS(on)=0 ID(on)=5.0mA, RL=1.6KΩ, VGS(off) =3.0V VDD=10V, VGS(on)=0 ID(on)=20mA, RL=450Ω, VGS(off) =10V VDD=10V, VGS(on)=0 ID(on)=10mA, RL=850Ω, VGS(off) =5.0V VDD=10V, VGS(on)=0 ID(on)=5.0mA, RL=1.6KΩ, VGS(off) =3.0V VDD=10V, VGS(on)=0 ID(on)=20mA, RL=450Ω, VGS(off) =10V VDD=10V, VGS(on)=0 ID(on)=10mA, RL=850Ω, VGS(off) =5.0V VDD=10V, VGS(on)=0 ID(on)=5.0mA, RL=1.6KΩ, VGS(off) =3.0V VDD=10V, VGS(on)=0
2N3970 MIN MAX
10
2N3971 MIN MAX
-
2N3972 MIN MAX
-
UNITS ns
- 15 - ns
- - 40 ns
10 -
- ns
- 15 - ns
- - 40 ns
30 -
- ns
- 60 - ns
- - 100 ns
TO-18 PACKAGE - MECHANICAL OUTLINE
A B
C
D E
F
LEAD #2 LEAD #1
I 45°
G H
LEAD #3
J R1
SYMBOL A (DIA) B (DIA)
C D E F (DIA) G (DIA) H I J
DIMENSIONS
INCHES MILLIMETERS
MIN MAX MIN MAX
0.209 0.230 5.31 5.84
0.178 0.195 4.52 4.95
- 0.030 -
0.76
0.170 0.210 4.32 5.33
0.500 - 12.70 -
0.016 0.019 0.41 0.48
0.100
2.54
0.050
1.27
0.036 0.046 0.91 1.17
0.028 0.048 0.71 1.22
TO-18 (REV: R1)
LEAD CODE:
1) SOURCE 2) DRAIN 3) GATE
.